Help with table in MDS which has auto-generated 'Code' column

Hi,
I have a table with Code as 'Auto-Generated'. Starts with 1.

I executed a procedure and inserted the data and some 1000 records got inserted in the MDM view. After going through the data, I realized that those records are NOT correct and I have to re-load the data. But if i do these, then the 'code' starts from 1001 , which I dont want . I want to start the code from 1. I tried with Import type 1 & Import status type 0 -But nothing worked out. Can you please help me?  Thanks  in advance!